Notifications Changes Multiple Global Efficacy

This patch adds notfication changes after changing the type
of global_efficacy in ActionPlan objects.

Change-Id: I1116cf1d19e4b19e19789f943a631d0400871766
Partially-Implements: blueprint multiple-global-efficacy-indicator

doc/notification_samples/action_plan-execution-start.json

@@ -30,7 +30,7 @@
       "uuid": "76be87bd-3422-43f9-93a0-e85a577e3061",
       "fault": null,
       "state": "ONGOING",
-      "global_efficacy": {},
+      "global_efficacy": [],
       "strategy_uuid": "cb3d0b58-4415-4d90-b75b-1e96878730e3",
       "strategy": {
         "watcher_object.namespace": "watcher",